Table 2: Goodness-of-fit test results for Weibull distribution function of four different groups (polished with 100-grit, 600-grit, 1000-grit, and glazed condition).

Surface treatmentA-D TestK-S TestAIC

100-grit polished1.0540.181186.19
600-grit polished0.3850.086174.36
1000-grit polished0.6240.132193.11
Glazed2.1570.203196.63